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Finding the Fourth Proportional to 624.05, 936.08 and 191.21

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Solution

The fourth proportional to 624.05, 936.08 and 191.21 is: 286.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.05 : 936.08 = 191.21 : x
  2. Step 2: Convert to fraction form
    624.05/936.08 = 191.21/x
  3. Step 3: Cross multiply
    624.05x = 936.08 × 191.21
  4. Step 4: Simplify right side
    624.05x = 178,986.90
  5. Step 5: Solve for x
    x = 178,986.90/624.05
  6. Step 6: Final answer
    x = 286.82

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.